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If there are 1,500 births, 1,500 deaths, 400 in-migrants and 100 out-migrants, what will be the total population change?

Answer and explanation

Correct answer: Increase of 300

Direct answer: Option A—an increase of 300 people. Solve the two components separately. First, natural increase = births − deaths = 1,500 − 1,500 = 0. Second, net migration = in-migration − out-migration = 400 − 100 = +300. Total population change = natural increase + net migration = 0 + 300 = +300. Therefore the population increases by 300. Option A is correct. Option B ignores the positive net migration. Option C reverses the migration balance; more people enter than leave, so migration cannot reduce the population. Option D incorrectly adds all figures without subtracting deaths and out-migration. A useful method is to write the formula before calculating: total change = (births − deaths) + (in − out).

Related tags

Population CalculationNatural IncreaseNet MigrationTotal ChangeProcesses Of Population ChangePopulationGeographyClass 9 Mcq

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